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ANEK [815]
3 years ago
14

Solve the following equation algebraically: 3 x squared = 12

Mathematics
2 answers:
Inessa05 [86]3 years ago
7 0
X = 2 or -2

either way it’s still 12 , hope this helps !
BabaBlast [244]3 years ago
3 0

Answer: x = ± 2

Step-by-step explanation:

3x² = 12

x² = 12/3

x² = 4

x = √4

x = ± 2

Answer: x = ± 2

<h2><em>Spymore</em></h2>
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a school has 415 third grade and 338 second graders how many more third graders are there than second graders?
Alika [10]

Answer:

There are 77 more third graders than there are second graders.

Step-by-step explanation:

You just have to subtract 338 from 415 to get your answer.

6 0
3 years ago
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How many copies of 1 twelfth are equivalent to 3 sixths? Help!
andrezito [222]

Answer:

6/12 is equal to 3/6 ( 6 twelfths is equal to 3 sixths )

Step-by-step explanation:  

multiply both sides of 3/6 by 2 to get the same denominator, doing that will get you 6/12

3 0
3 years ago
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the length of a rectangular garden is 3 m greater than the width. The area of the garden is 70m squared. find the dimensions of
Lerok [7]
A = l x w

so you know that the length is 3m longer than the width, so you could use a formula to represent that

w = l + 3

you then substitute the second equation into the first to solve for l

70 = l x (l +3)
70 = l^2 + 3l

you could then rearrange the formula and solve for l using the quadratic formula 

0 = l^2 + 3l - 70

l = -3 +- (square root (3)^2 - 4(1)(70)) / 2(1)
l = -3 +- (square root 9 + 280) / 2
l = -3 +- (square root 289) / 2
l = -3 +- 17 / 2

then you solve for the two seperate roots

l = -3 + 17 /2
l = 14 / 2
l = 7

or 

l = -3 - 17 / 2
l = -20 / 2
l = -10

since a length cannot be negative, this root is not viable. therefore l = 7

to solve for w you would use

w = l + 3
w = 7 + 3
w = 10 

hope this helps! if you did not understand a step or concept please let me know!
4 0
3 years ago
If 10 + a = 10, then a = 0
Lunna [17]

Answer:

B) identity property of addition.

Step-by-step explanation:

Given:

The statement given is:

10+a=10,\ then\ a=0

Here, we observe that 10 is added to a giving the number 10 itself as the answer. So, we know of a property which says that when 0 is added to a number, the result is the number itself. This property is called identity property of addition.

So, the value of a must be 0 because on adding a to 10, we are getting the number 10 only. So, the above statement is an example of identity property of addition.

5 0
3 years ago
Can someone help me out?
MAVERICK [17]
I ठिनक धट it's थे ३एड ओने
6 0
3 years ago
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